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Design of Earthing in Underground Substation using ETAP with Constraints

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Design of Earthing in Underground Substation using ETAP with Constraints


Daud Ahmad | Dr. Javed Ashraf



Daud Ahmad | Dr. Javed Ashraf "Design of Earthing in Underground Substation using ETAP with Constraints" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-5, August 2021, pp.195-200, URL: https://www.ijtsrd.com/papers/ijtsrd43787.pdf

This paper describes the earthing design of a distribution substation 33kV/415V, 50Hz system. in this type of substation equipment’s are 33kV HV panel, transformer, battery, battery charger and Low voltage panels. The earth mat is below substation which is almost 15-18-Meter-deep from ground level. The main considerable factors for earth mat design are soil resistivity which is higher due to basalt rock and system fault current. Fault current level of the system considered as 70kA derived from calculations. Earthing is essential for proper functioning of substation equipment’s and in the absence of proper designing affects in many ways like electric shock to personnel’s and malfunctions and damage to the equipment’s. The basic purpose of earthing is to ensure personnel safety, safe and reliable operation of equipment’s, prevent stray current, protection against interferences and keeps steps and touch potential within safe limit. This paper also discussed constraint in design due to below ground level. Result of manual calculation compared with design simulated through ETAP software version 19. The data used in design considered from a substation in Mumbai, Maharashtra.

33kV/415V underground substation, soil resistivity, Fault current, Earth mat, Step and touch potential


IJTSRD43787
Volume-5 | Issue-5, August 2021
195-200
IJTSRD | www.ijtsrd.com | E-ISSN 2456-6470
Copyright © 2019 by author(s) and International Journal of Trend in Scientific Research and Development Journal. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) (http://creativecommons.org/licenses/by/4.0)

International Journal of Trend in Scientific Research and Development - IJTSRD having online ISSN 2456-6470. IJTSRD is a leading Open Access, Peer-Reviewed International Journal which provides rapid publication of your research articles and aims to promote the theory and practice along with knowledge sharing between researchers, developers, engineers, students, and practitioners working in and around the world in many areas like Sciences, Technology, Innovation, Engineering, Agriculture, Management and many more and it is recommended by all Universities, review articles and short communications in all subjects. IJTSRD running an International Journal who are proving quality publication of peer reviewed and refereed international journals from diverse fields that emphasizes new research, development and their applications. IJTSRD provides an online access to exchange your research work, technical notes & surveying results among professionals throughout the world in e-journals. IJTSRD is a fastest growing and dynamic professional organization. The aim of this organization is to provide access not only to world class research resources, but through its professionals aim to bring in a significant transformation in the real of open access journals and online publishing.

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